Clothes-pin machinery.



PATENTED JULY 28, 1903.

R. RIGHARDI.

CLOTHES PIN MACHINERY.

APPLICATION FILED JULY 16, 1902.

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asccw No. 734,957. PATBNTED JULY'28, 1903. E. RIGHARDI.

CLOTHES PIN MACHINERY.

APPLICATION PILED'JULY 16, 1902.

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U ITED STATES ."Patented July 28, 1903.

PATENT OFFICE.

CLOTHES-PIN MACHINERY.

SPECIFICATION forming part Of Letters Patent No. 734,957,'dated July 28, 1903.

Application filed July 16, 1902. Serial No. 115,878. (No model.)

To all whom, it may concern.-

Be it known that 1, ROBERT RICHARDI, residing at Richmond, in the county of Henrico and State of Virginia, have invented certain new and useful Improvements in Turning-Lathes, of which the following is a specification.

My invention relatesto improvements in multiple ormany-spindled lathes for turning clothes-pin blanks and other like forms from blocks of wood; and it primarily seeks to provide a simple, cheap, and easily-operated machine whereby the blocks of wood are shaped with the utmost degree of accuracy and the minimum amount of waste.

This invention comprehends a machine of the character stated in which the block to be operated upon is fed by hand or otherwise to a rotatable chuck, which automatically chucks the block and then carries or feeds it to a revolving cutter,.where the block is formed .into the desired shape, after which the block is automatically released from the chuck.

Reference is had more particularly to the accompanying drawings, in which like numerals of reference indicate like parts in all the figures, and in which- Figure 1 is a top plan view of my invention. Fig. 2 is a vertical longitudinal section thereof, taken on the line 2 2 of Fig. 1 and looking in the direction of the arrow. Fig. 3 is a cross-sectional view taken practically on the line 3 3 of Fig. 1 and looking in the direction of the arrow. Fig. 4c is a detail diagrammatic view of one part of the chuck mechanism and showing only four spindleholding members. Fig. 5 is a detail section on the line 5 5 of Fig. 4. Fig. 6 is a similar view on the line 6 6 of Fig. 5. Fig. 7 is an enlarged detail perspective View of one of the block-holding spindle members. Fig. 8 is a longitudinal section thereof, and Figs. 9 and 10 are detail views hereinafter referred to.

1 indicates a suitable base or standardupon which in suitable bearings 2 2 is mounted the main or drive shaft 3, carrying at one end the pulleys 4 4c, for a purpose presently to appear. Mounted upon the shaft 3 is the cutter-carrying frame 5, which consists of the side members 5 5 between which in a radial arrangement and upon cross-pieces 5 are mounted the cutters 6, as best shown in Figs. land 2. The side members 5 5 are open, as at 5 to allow of the easy discharge of the shavings. The cutters 6 have their cutting edges 6 so constructed to give the desired shape to the block.

Held to rotate in bearings 7 70m the frame 1 is a second shaft 8, carrying at one end the drive-gear 8 with which meshes the wormgear 8, held to rotate in bearings 8 8 and carrying at its lower end the drive-pulley 8, as clearly shown in Figs. 1 and 3. The worm gear derives its motion from the main driveshaft 3 through the medium of the belt 4 taking around the pulleys 4 and 8. (See Fig. 1.) I

Upon the shaft 8 is mounted and held to rotate therewith. the chucking mechanism, (designated generally by the reference-numeral9.) The chucking mechanism 9 con= sists, essentially, of two circular disks 1011, suitably placed apart and which carry the chucking-spindles hereinafter referred to.

Referring now more particularly to Figs. 4:, 5, and 6, it will be seen the disk 10 hasa series of radial slots 10, (one for each chucking-spindle,) in which is held to slide the spindle-carrying block 10. This block 10 has side flanges 1O 10, forming guideways 10, as clearly shown in Figs. 4 and 6. In a bore 10 is held to rotate a spindle 10 having aroller 1O at its outer end and a spur 10 at its inner end for a purpose presently readily understood. The spindles 1O are so constructed as to have no longitudinal motion in the bore 10. Buffer-springs 1O serve to main tain the blocks 10", and therefore the spindles 10 to their outermost position. The disk 11, like the disk 10, has a series of radial slots 11 equal in number and similarly arranged to those in the disk '10. Held to slide in the slots 11 of the disk 11 are aseries of spindlecarryingblocks 11?, of a like construction to the blocks 1O on the disk 10. The blocks 11 like the blocks 10 have side flanges 11 11 and buffer-springs 11.

Referring now more particularly to Figs. 2, 7, and 8, it will be seen the blocks 11 have suitable bores 11", in which are held to rotate the spindle-carrying sleeves 12, carrying a roller or pulley 12 at their inner ends, as shown. Held for a longitudinal movement in the bore 12 in the sleeve 12 is what I term the chucking-spindle 13, which carries at its inner end the spur 13 for engaging the block, the other end 15 of which engages an 5 aperture 14. in the lever 14, which lever 14 is pivoted at la to the bracket extension 11 of the block-flange 11, as clearly shown in Figs. 7 and 8.

Held free to move upon rods 15 15 and 10 made fast to or integral with the inside flange 11 of the block 11 is a cross-piece 16, connected to the lever 14 by a rod 16*. (See Figs. 7 and 8.) Upon the extreme outer ends of the rods 15 15 are circular adjusting-nuts 15 15 between which and the cross-piece 16 are buffer-springs 16 16 for holding the lever 14 and the chucking-spindle 13 in their normal or chucking position. At the free end of the lever 14 is a friction-roller 14 for a purpose am presently to appear.

17 17 indicate what I term guide members. These guide members are fixedly connected to the frame 1 of the machine-bed and have at their upper ends a curved portion 17 for engaging with the rollers 1O 12 as will be clearly understood by reference to Figs. 2 and 4 of the drawings.

Rigidly connected to the frame 1 of th machine is a cam-guide 20 for Withdrawing 0, the chuckingspindles from and releasing the finished block.

At the entrant end of the machine is mounted upon a suitable standard a trough or table 25, having adjustable guides 26 fas- 5 tened to the under side thereof by means of bolts 26 in any approved fashion.

From the foregoing, taken in connection with the accompanying drawings, the operation of the invention will best be understood as follows:

Operation: The blocks or stock are fed to the chucking mechanism by pushing them along the table or trough 25 and are held in the proper position by the guides 26, after 5 which they are chucked by reason of the of the circle described by the chucking mechanism toward the cutter device. As soon as the rollers 10 and 12 come in contact with the curved portion of the guide members 17 17 the buffer-springs are compressed. This causes the stock to be carried in the arc of the circle described by the cutter-blades during the cutting operation. In other words, the block after being chucked first moves in the arc of the circle described with its cen- 6o ter as the chucking-mechanism-carrying shaft and then through the arc of a circle described with the main drive-shaft as a center, it be ing understood the arc of the circle through which the stock travels when operated upon by the cutter is of sufficient length that the stock will receive at least a full rotation while under influence of the cutter-knives, it being also understood that the cutter-knives revolve more rapidly than the block-carrying chucking mechanism. The rotation of the block being produced by reason of the rollers 10 12 being in close contact with the curved portion 17- of the guides 17 17. (See Figs. 2 and a.) After leaving the guides 17 17 the stock again travels in the arc of its own circle, the buffer-springs 10 11 serving to again move the chucking-spindles to their outermost radial position. particularly to Figs. 2 and 3, it will be seen that after the chucking spindle carrying blocks leave the influence of the guides 17 17 the roller on the lever let will engage the cam-guide 20 and release the finished block. As soon as the roller reaches the end 2O of the cam-guide 20 it will run off? and again chuck another block.

While I have shown circular rollers upon the chucking-spindles, yet I desire it understood that when different shapes are to be worked out of the block other styles of rollers may be usedas, for instance, a hexagonal (see Fig. 10) or octagonal. (See Fig. 9.) Furthermore, I desire it understood that in practice I may find it desirable to mount the spindles upon ball-bearings. Neither do I desire to limit myself to any specific number of chucking-spindles or cutter-knives, since any desired number can be used without departing from the scope of the appended claims.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-- 1. In a machine as described, a rotatable cutter mechanism adapted to rotate around one axis, a rotary stock-feeding mechanism adapted to rotate around another axis, said feeding mechanism including chucking-spindles for holding the stock, said chucking-spindles being adapted to rotate with the feed mechanism, a guide for engaging said spindles when under the influence of the cutter mechanism, whereby the stock first moves in the arc of a circle having as its center the axis of the feeding mechanism, then, while under the influence of the cutter mechanism, in the arc of a circle with the axis of the cutter mechanism as a center as and for the purposes described.

2. A machine of the class described, comprising a rotatable cutter mechanism, radially-arranged means for feeding the stock to the cutter mechanism in the arc of one circle, means for guiding the stock in the arc of the circle described by the cutter mechanism while the said stock is being operated upon, substantially as shown and for the purposes described.

3. A machine as described, comprising in combination a rotatable cutter mechanism, a radial feeding mechanism for feeding stock to cutter mechanism in the arc of one circle said feeding mechanism including a pair of circular disks, radially slotted and carrying Referring now more IIO chucking and releasing mechanism, said mechanism comprising a slidable block 11 having a bracket portion 11 and adapted to slide in the radial slots of one of the circular disks, said mechanism further including a spindle-carrying hub 12 and the spindle 13, said spindle 13 being adapted for longitudinal movement Within the hub 12, a lever 14 carrying a friction-roller 14 at one end, said lever 14 being pivotally connected to the bracket portion 11-, a cam-guide for controlling the movement of said spindle, means for rotating said feeding mechanism and said outter mechanism, whereby the chucking-spindle 13 will travel first in the arc of the circle described by the feeding mechanism, fixedlymounted guides for causing the spindle 13 to move in the arc of the circle described by the cutter mechanism when the stock is being operated upon by the cutter mechanism, substantially as and for the purposes described.

4. In a machine of the class described, a chucking mechanism, said chucking mechanism comprising a block 11 a rotatable sleeve 12 mounted Within the block 11 said sleeve being formed with a roller 12 at one end, a spindle 13 mounted Within a bore 12 in the sleeve 12 and adapted for longitudinal movement therein, a bracket 11 formed integral in the block 11", the lever 14 pivotally connected to the bracket 11 and carrying a friction-roller 14 at its free end, said lever being adapted to engage the spindle 13, the bufierspring 16 and block 16 loosely mounted upon the spindles 15 15 said spindles 15 15 being fixedly mounted upon the block 11 said block 16 and said lever 14 being connected to each other by a rod 16, said block and said bufferspring serving to hold the lever 14 and spindle 13 in their normal or chucking position, all being arranged substantially as shown and for the purposes described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ROBERT RICHARDI.

Witnesses:

E. LESLIE SPENcE, J r., RUSSELL A. PHILLIPS. 

